Cryptic clues. 1a carts I'd overturned - that's extreme(7)8a calm half seen frenchman(6) 15a not entirely excellent sticky stuff(3) 20a had none left, so departed quickly?(3,3). 23a Seize a group of eggs(6). 26a gave medical help - for nothing?(7) 19d unfortunate dog set to get heavy food(6) 4d what cows chew without celebrity sauce(7) 5a goodness me! We've caught a duck(4) 6d number on Nile affected by weather phenomenon(2,4). many thanks for any help